I installed the JChem Extensions 2.8.2.v0204 in Knime 2.9.2 and pointed to my academic license in the Knime preferences. However i still get the error message "Configure failed (LicenseInvalidException): Node doesn't have the license key." when i try to use for example the pKa node from the calculator plugins.

I dont know if i have to do something else with the license.cxl file but so far i just copied it to the chemaxon folder in the user directory (C:/Users/.../chemaxon).

thanks for your fast reply. I checked the settings in the preferences again and everything looks fine. I thought there might be a problem when i am running Knime as an admin and that i have to put the license file than in a different folder. However, i was not able to solve the issue so far and i still get the same error message.

Okay, problem solved.
I was just not aware of the additional license required for the Knime extensions and i thought the academical license from Chemaxon would be sufficient.
Thanks a lot for the fast support.

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